A system for preparing customized printed products over a communications network, providing a wholesaler web server computer connected to the network; a printed products preparation system therein allowing an end-user anonymously connected to the wholesaler web server computer through at least one retailer web server to prepare an electronic file defining customized printed product; a workflow management server adapted to receive a copy of the electronic file to print the predetermined quantity of the customized printed product; the wholesaler web server computer being adapted to transmit a notification message to the at least one retailer web server computer; the copy of the electronic file being transmitted from the printed products preparation system to the workflow management system upon designation of the notification message by an operator of the retailer web server computer.